what are the options for the obama administration to stop north korea's can escalating threats? >> actually it seems that the current crisis may be winding down. north korea's rhetoric seems to have toned down a little bit. they could, of course, make another kind of attack. but the main option for the obama administration is to stick firm with it's policies trying to shape the choices of north korea so that we can get back to the six party talks. >> as we just reported, china's chief negotiator is set to visit the u.s. next week. to what extend do you think china is willing to use it's influence? >>> china is sometimes able to use it's influence to get north korea to the negotiating table. it is less able to use influence to shape north korea's negotiating position, and that's the problem. north korea's goals here, and it's negotiabling stance, or opposed to those of the united states, japan, and south korea. so the question that ambassador davies will probably be asking, is what evidence is there that north korea is interested in negotiating in a manner with the six party talk